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Please note that this historical material is still in provisional form pending further review, but any comments/suggestions would be welcome to JMA (mcss(at)climar.kishou.go.jp). |
History of IMMPC/IMMT
Description of each change with resolution and recommendation
| Date in effect | Decription of change | Resolution | Recommendation |
|---|---|---|---|
| Jun. 2012 | IMMT-5 is introduced (modifications to IMMT-4 format) - To add minor changes |
Res. 2 EC- LXIV (Jun. 2012) | Rec. 6 JCOMM-IV (May 2012) |
| 1 Jan. 2011 | IMMT-4 is introduced (modifications to IMMT-3 format) - To incorporate new elements including relative humidity and an AWS indicator |
Res. 4 EC- LXII (Jun. 2010) | Rec. 9 JCOMM-III (Nov. 2009) |
| 1 Jan. 2007 | IMMT-3 is introduced (modifications to IMMT-2 format) - To incorporate QC information required for the VOSClim Project |
Res. 6 EC- LVIII (Jun. 2006) | Rec. 9 JCOMM-II (Sep. 2005) |
| 1 Jan. 2003 | IMMT-2 is introduced (modifications to IMMT-1 format) - To incorporate new data elements required for the VOSClim Project |
Res. 7 EC- LIV (Jun. 2002) | Rec. 8 JCOMM-I (Jun. 2001) |
| 1 Jan. 1998 | Introduction of ISO Alpha-2 country code into IMMT format - ISO Alpha-2 country code be used as the country codes in the IMMT format |
Res. 8 EC-XLIX (Jun. 1997) | Rec. 8 CMM-XII (Mar. 1997) |
| 2 Nov. 1994 | IMMT-1 is introduced (modifications to IMMT format) - IMMT-1 is introduced |
Res. 10 EC-XLV (Jun. 1993) | Rec. 13 CMM-XI (Apr. 1993) Annex to Rec.13 |
| 1 Mar. 1985 | Modification to IMMPC and IMMT format - Inclusion of weather data indicator ix to IMMPC and IMMT |
Res. 8 EC-XXXVII (Jun. 1985) | Rec. 5 CMM-IX (Oct. 1984) |
| 1 Jan. 1982 | Revision of the IMMPC and introduction of the IMMT format - Revision of IMMPC in accordance with FM 13-VII SHIP - Introduction of IMMT |
Res. 9 EC-XXXIV (Jun. 1982) | Rec. 8 CMM-VIII (Sep. 1981) |
| 1 Jan. 1966 | Amendments to IMMPC - Visibility, height of cloud, etc. are modified |
Res. 14 EC-XVII (May 1965) | Rec. 28 CMM-IV (Nov. 1964) |
| 1 Jan. 1962 | Amendments to technical regulations, etc. | Res. 18 and 20 EC-XIII (May 1961) Annex to Res.20 |
Rec.23 CMM-III (Aug. 1960) Annex to Rec.23 |
| -- | - Re-allocation of numbers indicating the country of origin - Date of changing IMMPC |
Res. 18 EC-XIII (May 1961) | Rec. 24 and 25 CMM-III (Aug. 1960) |
| -- | Amendments to technical regulation: use of international punch card - International maritime punch card should be used |
Res. 33 EC-IX (May 1957) | Rec. 30 CMM-II (Oct. 1956) Attachment to annex to Rec.30 |
| 1951? | Adoption of international code form for punching cards from ship observations | Res. 23 (CD 1951) |